Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10949877 | Problem generation device, problem generation method, and prize management system | — | 2021-03-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10949877 | Problem generation device, problem generation method, and prize management system | — | 2021-03-16 |